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<p>In order to study the rule of change of mechanical properties of aeolian sand concrete (ASC) in different cryogenic environments and to compare the of influence of different factors on ASC strength, 100% ASC was prepared by replacing river sand with aeolian sand. The cube compressive strength, the compressive strength, and the energy absorption variation of ASC had been studied for different temperatures (20, 0, − 5, − 10, − 15 and − 20℃), different water binder ratios (0.40, 0.45 and 0.55), different moisture content, and different curing ages (7d, 14d, 28d and 60d). The results showed that the compressive strength of ASC in each group first decreased and then increased with decreasing temperature, with the largest growth rate of ASC compressive strength at − 5℃ ~ 0℃. The compressive strength of the ASC increased with the moisture content, and the effect of the moisture content on the compressive strength is more pronounced for lower temperatures. In the functional relationship between compressive strength, moisture content, temperature, and water binder ratio of ASC at − 20-20℃ was studied and a high-precision model of the compressive strength temperature moisture content relation was developed. Finally, the characteristic values of uniaxial compression and the variation in energy absorption during axial compression were analyzed separately. A uniaxial compression constitutive model for ASC with water binder ratios of 0.40, 0.45, and 0.55 was developed for the temperature range of − 20-20°C, and the model demonstrated high accuracy in predicting the stress-strain relationship.</p>

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Research on the Mechanical Properties and Energy Dissipation Characterization of Full Aeolian Sand Concrete under Normal/Low Temperature

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • Wei Dong,
  • Yuyang Tian,
  • Menghu Zhou,
  • Zhiqiang Ren

摘要

In order to study the rule of change of mechanical properties of aeolian sand concrete (ASC) in different cryogenic environments and to compare the of influence of different factors on ASC strength, 100% ASC was prepared by replacing river sand with aeolian sand. The cube compressive strength, the compressive strength, and the energy absorption variation of ASC had been studied for different temperatures (20, 0, − 5, − 10, − 15 and − 20℃), different water binder ratios (0.40, 0.45 and 0.55), different moisture content, and different curing ages (7d, 14d, 28d and 60d). The results showed that the compressive strength of ASC in each group first decreased and then increased with decreasing temperature, with the largest growth rate of ASC compressive strength at − 5℃ ~ 0℃. The compressive strength of the ASC increased with the moisture content, and the effect of the moisture content on the compressive strength is more pronounced for lower temperatures. In the functional relationship between compressive strength, moisture content, temperature, and water binder ratio of ASC at − 20-20℃ was studied and a high-precision model of the compressive strength temperature moisture content relation was developed. Finally, the characteristic values of uniaxial compression and the variation in energy absorption during axial compression were analyzed separately. A uniaxial compression constitutive model for ASC with water binder ratios of 0.40, 0.45, and 0.55 was developed for the temperature range of − 20-20°C, and the model demonstrated high accuracy in predicting the stress-strain relationship.